Aasi, J.; Abbott, B.P.; Abbott, R.; Abbott, T.; Abernathy, M.R. et al.: Narrow-band search of continuous gravitational-wave signals from Crab and Vela pulsars in Virgo VSR4 data. In: Physical Review D - Particles, Fields, Gravitation and Cosmology 91 (2015), Nr. 2, 022004. DOI:
https://doi.org/10.1103/PhysRevD.91.022004